Answer: Probability that Jim wins is given by
![P(A)=(1)/(9)](https://img.qammunity.org/2019/formulas/mathematics/middle-school/5cxsvr2oec282smn9pum6tnmmzrjyw8ocx.png)
Explanation:
Since we have given that
The odds in favor of Jim beating a friend golf are 1:8.
Let A be the event that Jim beating a friend golf.
So, according to ratio, it becomes,
![(P(A))/(P(A'))=(1)/(8)](https://img.qammunity.org/2019/formulas/mathematics/middle-school/dn61v2noe6g598qahdsbnlljfwda2eh92s.png)
P(A) = 1x
P(A') = 8x
And we know that
P(A)+P(A')=1
![x+8x=1\\\\9x=1\\\\x=(1)/(9)](https://img.qammunity.org/2019/formulas/mathematics/middle-school/36pt3fc8qn8mxlrcjffvr9cme4h76s6bmu.png)
That implies
![P(A)=(1)/(9)\\\\and\\\\P(A')=(8)/(9)](https://img.qammunity.org/2019/formulas/mathematics/middle-school/w6qxhfbbs3ayhs7xv4xuhl243j87p6ueiq.png)
Hence, Probability that Jim wins is given by
![P(A)=(1)/(9)](https://img.qammunity.org/2019/formulas/mathematics/middle-school/5cxsvr2oec282smn9pum6tnmmzrjyw8ocx.png)